The RILA 4x4 MRAP can be fitted with a one-man open-top turret mounted on the roof of the vehicle that can be armed with a machine gun up to 12.7mm caliber. This turret can be fitted with armor plates with bulletproof windows all around. This turret is manually controlled and has a traverse of 360°. The vehicle can be also equipped with a remotely operated weapon station that allows a gunner to remain in protection under the armor of the vehicle. This type of turret can be armed with a similar weapon such as the manual turret.

The Rila 4x4 MRAP design features three main parts with the engine at the front, the crew in the middle, and the troops compartment at the rear. The front of the crew cabin has two large bulletproof windows and one single door on each side of the hull. The vehicle can accommodate up to 12 fully geared military personnel, including a driver, commander, and 10 soldiers. The infantrymen enter and leave the vehicle via a single door located at the rear of the hull which is also fitted with three small bulletproof windows. Each side of the hull is provided with five small bulletproof windows with firing ports in the lower part enabling the troops to aim and fire with their individual weapons from inside of the vehicle. The Rila MRAP use a monocoque structure with a body shell built up from steel armor plates, rather than attaching them to a frame. It features a special lightweight armor package designed to minimize the curb weight and maximize mobility and off-road mobility. It offers ballistic protection up to Level IV STANAG 4569 against the firing of small arms 7.62mm armor-piercing bullets, as well as 12.7mm armor-piercing rounds, 14.5mm rounds. For mine, protection, the vehicle has V-hull shaped floor to increase crew survivability by deflecting the blast of a land mine or IEDs (Improvised Explosive Devices) away from the vehicle. The Rila has a mine protection STANAG 4569 up to Level 4a, it can withstand a blast of 8 kg anti-tank mine under any wheel or 10 kg under the center of the hull. The Rila has a maximum combat weight of 18,000 kg with a maximum payload of 4,500 kg.